/Engine/Plugins/Editor/UVEditor/Source/UVEditorTools/Public/ToolTargets/UVEditorToolMeshInput.h
Updates only the UnwrapPreview from AppliedPreview, without updating the non-preview meshes. Useful for transient updates when we only care about updating the visible items.
void UpdateUnwrapPreviewFromAppliedPreview ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > * ChangedElementIDs, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > * ChangedConnectivityTids, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > * FastRenderUpdateTids )